/Engine/Source/Editor/UnrealEd/Classes/Builders/LinearStairBuilder.h
Builds the brush shape for the specifiedABrushor the builder brush if Brush is nullptr.
true if the brush shape was updated.
virtual bool Build ( [UWorld](API\Runtime\Engine\Engine\UWorld) * InWorld, [ABrush](API\Runtime\Engine\Engine\ABrush) * InBrush )